I had the benefit of reading everyone's post. But the real problem was the most basic. No fuel in the bowls while a fully laden fuel line is observed after running just long enough to use the fuel in the bowls. And then the bowls refill over time.
Everyone had the right answer, but we all get wrapped up in our understanding of things to the point of not addressing the real problem. This thread screamed the question: Why are the dry float bowls recovering?